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# The general solution of the differential equation $\large\frac{dy}{dx}=\frac{1-x}{y}$ is a family of curves which looks most like which of the following?

$ydy=(1-x)dx$
$\large\frac{y^2}{2}$$=x- \large\frac{x^2}{2}$$+c$
$y^2+x^2-2x=c'$
$(x-1)^2+y^2=c''$
It is a circle
Hence b is the correct answer.